Alright, let's work through 6433 times 871 step by step
6433 × 871 = 871 × (6433)
+ 871 × 3 which equals 2613
+ 871 × 30 producing 26130
+ 871 × 400 yielding 348400
+ 871 × 6000 what gives us 5226000

= 5603143
